<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    *{
      margin: 0;
      padding: 0;
    }
    body{
      width: 100%;
      height: 100%;
      background-color: rgb(43, 60,77);
    }
    .bigBox{
      width: 300px;
      height: 400px;
      margin: auto;
      display: flex;
      align-items: center;
      justify-items: center;
    }
    .bigBox>div{
      text-align: center;
    }
    .login{
      background-color: #fff;
      margin-top: 10px;
      width: 280px;
      text-align: center;
      height: 130px;
      padding-top :10px;
    }
    .login input{
      height: 25px;
      margin-bottom: 10px;
      border-color: rgb(226, 228, 234);
      outline: none;     
    }
    .login button{
      width: 50px;
      height: 30px;
      border: none;
      background-color: rgb(64, 158, 255);
      color: #fff;
      border-radius: 4px;
    }
  </style>
</head>
<body>
  <div class="bigBox">
    <div>
      <h2>后台管理系统</h2>
      <div class="login">
        <input type="text" class="username"><br>
        <input type="password" class="password"><br>
        <button>登录</button>
      </div>
    </div>
  </div>
</body>
<script src="./js/popup.js"></script>
<script src="./js/login.js"></script>
<script src="./js/ajax.js"></script>
<script src="./js/cookie.js"></script>

</html>